Nitriding Product List and Ranking from 31 Manufacturers, Suppliers and Companies

Last Updated：Oct 15, 2025 Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.

Nitriding Manufacturer, Suppliers and Company Rankings

Last Updated：Oct 15, 2025 Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.

極東窒化研究所 Kanagawa//Manufacturing and processing contract
旭千代田工業技術本部 Aichi//Ferrous/Non-ferrous metals
HEF DURFERRIT JAPAN Kanagawa//Manufacturing and processing contract
4 小山鋼材 Osaka//Trading company/Wholesale
5 ミリオン化学 Osaka//Chemical

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Nitriding Product ranking

Last Updated：Oct 15, 2025 Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.

The difference between gas nitriding treatment and gas soft nitriding treatment. 極東窒化研究所
Salt bath soft nitriding treatment "Isonite TF treatment" 旭千代田工業技術本部
Various Mold-Compatible Surface Treatment "KOSUMO-Process" 小山鋼材
4 Salt bath soft nitriding + oxidation treatment "Isonite SQP/QPQ treatment" 旭千代田工業技術本部
5 Nitriding treatment ≪Tuftride, QPQ≫ HEF DURFERRIT JAPAN

Nitriding Product List

46～60 item / All 73 items

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Surface effect treatment SP that does not impair the properties of stainless steel.

(Presentation of technical data) Suitable nitriding treatment for preventing corrosion of solder baths and components! It forms a special nitrided layer with a hardened layer of HV1000 or higher.

SP treatment is an effective process for austenitic stainless steel and is useful for preventing corrosion in soldering equipment and solder baths made from lead-free materials. Traditionally, nitriding treatment for stainless steel typically improves wear resistance but has the drawback of deteriorating corrosion resistance. However, SP treatment can enhance wear resistance without compromising corrosion resistance. **Features of SP Treatment** SP treatment is a type of nitriding process that is effective for austenitic stainless steels (such as SUS304, 310, 316). It forms a special nitrided layer, known as the SP layer, while maintaining a passive film (oxide film). This layer has a different structure from the typical nitrided compound layer. It excels in both wear and corrosion resistance and has the following characteristics: - It has a hardened layer with a hardness of HV1000 or higher. - Corrosion resistance does not decrease (it does not rust even after 30 days of salt spray testing). - It is processed at a lower temperature (below 450°C) than traditional nitriding, resulting in even less deformation. Currently, technical materials on nitriding, titled "What is Nitriding," can be downloaded for free. For more details, please download the catalog or contact us.

Company：極東窒化研究所
Price：Other

Surface treatment contract service

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Nitriding treatment to strengthen the machine tool industry and industrial machinery.

[Technical Data Presentation] Nitriding treatment that diffuses nitrogen into the surface of steel, dramatically strengthening the surface of the steel.

Kyokuto Nitriding Laboratory Co., Ltd. has specialized in "nitriding treatment" for over 50 years, conducting metal surface hardening and heat treatment for machine parts, aircraft parts, and more. Leveraging our unique perspective as a precision machinery manufacturer and the know-how cultivated through rigorous manufacturing processes, we are engaged in research and development of technologies and systems that only we can provide. We aim to contribute widely to society as a company that earnestly tackles any challenges in various fields of machine parts, which are becoming increasingly complex and demanding high precision. [Business Activities] - Gas nitriding treatment (ordinary nitriding, SP treatment, UN treatment) SP: SP treatment (special nitriding treatment for stainless steel) UN: Ulnite (long-time treatment to thicken the nitrided layer) - Gas soft nitriding treatment (nitrogen-based) - Stress relief annealing treatment - Oxidation-free annealing treatment We are currently offering downloadable technical materials for "Company Profile" and "What is Nitriding?" For more details, please contact us or download the catalog.

Company：極東窒化研究所
Price：Other

Surface treatment contract service
Processing Contract

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Nitriding treatment ≪Tuftride, QPQ≫

The classic salt bath soft nitriding treatment, Tuftride, and QPQ treatment are revived here. Significantly improves the sliding characteristics and corrosion resistance of machine parts. Complies with REACH regulations.

1. What is nitriding treatment: Nitriding is a process that involves permeating nitrogen ions into the surface of materials such as steel and titanium alloys to harden them. By allowing nitrogen ions to penetrate the metal, nitrides of the added elements in the base material (Cr, Al, Mo) are formed (CrN, AlN, Mo2N), creating a hard compound layer. The hardness of this compound layer depends on the amount of these additives, exceeding Hv1200 in alloy steels. There are methods that utilize salt baths, gas atmospheres, or ion environments. 2. Characteristics of salt bath soft nitriding treatment: - Unlike carburizing and high-frequency quenching, there is minimal deformation after treatment, eliminating the need for subsequent polishing. - There is no reduction in fatigue strength after treatment, as seen with hard Cr plating or zinc plating. Nitriding treatment not only improves resistance to galling, wear, and corrosion but also enhances fatigue strength. - In gas and ion nitriding, for complex-shaped parts, gases and ions may not circulate uniformly along the part's shape, leading to uneven nitriding. In a salt bath, abundant nitriding ions circulate uniformly over the entire surface of the part, forming a consistent nitriding layer. A dense and tough nitrided compound (ε-iron nitride) layer improves sliding properties. A porous layer of a few micrometers at the very surface retains lubricating oil, ensuring favorable sliding conditions. 3. Characteristics of Tuftride and QPQ: - Compliant with REACH regulations, zero use of toxic substances, and zero wastewater (all solid waste).

Company：HEF DURFERRIT JAPAN
Price：Other

Other Auto Parts
gear
shaft

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Technical Explanation Document for Salt Bath Soft Nitriding "Tuftride Treatment / QPQ Treatment"

REACH regulation compliant! Reducing environmental impact with a unique salt bath agent. Also reduces disposal costs.

The "Tuftride treatment" is a salt bath soft nitriding process that uses a uniquely developed salt bath agent, compliant with the European environmental regulation "REACH." Compared to gas soft nitriding processes that use ammonia gas, it significantly reduces environmental impact. It offers many advantages in surface processing, such as improved wear resistance, corrosion resistance, and seizure resistance, and is adopted by major automobile manufacturers for shafts and ball screws, as well as by construction equipment manufacturers for hydraulic pistons. ★ We are currently offering a technical explanation document for free ★ [Contents of the document] ■ What is Tuftride treatment and QPQ treatment ■ Composition and thickness of the nitrided layer ■ Improvement of component characteristics and mechanical sliding properties ■ Plant technology ■ Consideration for the environment, etc. * The technical explanation document can be viewed via the download button below.

Company：HEF DURFERRIT JAPAN
Price：Other

Surface treatment contract service
Processing Contract
Other surface treatment equipment

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REACH regulation compliant 'Salt Bath Soft Nitriding Treatment Technology (CLIN Process)'

Improved wear resistance, corrosion resistance, and seizure resistance. Performance data will be provided.

The "Salt Bath Soft Nitriding Treatment Technology (CLIN Process)" is a technique that applies soft nitriding and oxidation thermochemically, strengthening the surface of iron materials with nitrogen and a small amount of carbon in a salt bath. It has a low environmental impact, compliant with REACH regulations, and can be used as an alternative to chrome plating. It contributes to improving wear resistance, seizure resistance, corrosion resistance, and fatigue strength in various products such as gas springs, hydraulic cylinders, and brake pistons. We are currently offering explanatory materials that introduce successful alternatives to chrome plating! 【Features】 ■ Closed treatment with no wastewater ■ Excellent corrosion resistance ■ Widely adopted by major automobile manufacturers and construction equipment manufacturers *The materials can be viewed immediately via "PDF Download." Please feel free to contact us for inquiries.

Company：HEF DURFERRIT JAPAN
Price：Other

Surface treatment contract service
Processing Contract
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Salt Bath Soft Nitriding Treatment Technology (CLIN Process) *Suitable for Home Appliances

For washing machine shafts, tubes, etc. Can impart corrosion resistance and friction/wear properties. Complies with REACH regulations.

The "Salt Bath Soft Nitriding Treatment Technology (CLIN Process)" is a technique that applies soft nitriding and oxidation thermochemically, strengthening the surface of iron materials with nitrogen and a small amount of carbon in a salt bath. It has a low environmental impact, compliant with REACH regulations, and provides excellent corrosion resistance. When applied to steel components, it can be used as a substitute for stainless steel. It also has high compatibility with sealing materials and is suitable for home appliances such as washing machine shafts and tubes, as well as in the automotive and military fields. 【Features】 ■ Alternative to chrome plating and gas soft nitriding treatment ■ Reduces friction, contributing to lower power consumption ■ No concerns about peeling that exposes the target material ■ Excellent treatment uniformity *For more details, please refer to the materials. Feel free to contact us with any inquiries.

Company：HEF DURFERRIT JAPAN
Price：Other

Surface treatment contract service

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Nitride treatment for differential components

Improvement of mechanical strength and wear resistance! Salt bath soft nitriding treatment technology suitable for differential components.

We would like to introduce HEF's salt bath soft nitriding treatment technology suitable for differential components. The nitrided layers generated during the treatment (mainly the diffusion layer) improve mechanical strength and fatigue strength. Additionally, the compound layer formed during the treatment and its surface condition enhance wear resistance. The application and mass production of salt bath soft nitriding treatment for various differential components are progressing, and we have a track record of applications such as "application to differential cases" and "application to differential shafts." Please feel free to contact us when needed. 【Features】 ■ Improvement of mechanical strength ■ Improvement of wear resistance ■ Reduction of treatment costs (compared to electroless Ni plating) *For more details, please refer to the PDF materials or feel free to contact us.

Company：HEF DURFERRIT JAPAN
Price：Other

Other Auto Parts
Engine parts
Processing Contract

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ECO-CLIN

Achieving a circular economy with CLIN (salt bath soft nitriding treatment) in industrial waste recycling! Eliminating concerns about raw material procurement.

We would like to introduce the 'ECO-CLIN Process' developed by the HEF Group. This technology allows for the recycling of wastewater and solid waste generated from the gas nitriding treatment line, directly converting it into regenerated treatment salt. At the HEF Group's upcycling sites and Green Centers established around the world, this system minimizes the impact of gas nitriding treatment on the natural resource market while alleviating concerns over raw material procurement. 【Targets】 ■ Ensuring the sustainability of salt bath nitriding treatment technology ■ Achieving zero mineral waste emissions from the nitriding treatment line ■ Minimizing the impact of fluctuations in raw material market conditions ■ Reducing the carbon footprint of salt bath nitriding treatment technology *For more details, please refer to the PDF document or feel free to contact us.

Company：HEF DURFERRIT JAPAN
Price：Other

Surface treatment contract service

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Air Water Inc. Company Introduction

Turning the impossible into possible with technology born from years of accumulated know-how in the gas business!

Energy conservation, miniaturization, and low fuel consumption are sought after in 21st-century society, along with securing resources and maintaining the environment, while technological innovation is advancing at a rapid pace. In the field of surface treatment, customer demands are diversifying, and new technologies are required. Our NV process aims to provide products that respond to various changes from our customers and to support problem-solving and new development in collaboration with them. 【Business Content】 ■ Metal surface treatment ■ Sale of technology and know-how related to metal surface treatment *For more details, please refer to the PDF document or feel free to contact us.

Company：エア・ウォーターNV
Price：Other

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[Proprietary Technology] Performance and Power of NV Nitride

With low-temperature nitriding, surface roughness and thermal distortion after nitriding treatment can be minimized! The thickness of the compound layer can be controlled.

We will introduce the performance and effectiveness of "NV Nitriding." It provides a hardened layer with excellent wear resistance for various materials. Additionally, with low-temperature nitriding, surface roughness and thermal distortion after nitriding treatment can be minimized, making it suitable for mass nitriding of precision parts and thin plate products, while allowing control over the thickness of the compound layer without sacrificing the hardened layer. 【Performance and Effectiveness】 ■ Wide range of applicable steel types - Provides a hardened layer with excellent wear resistance for various materials. - Generates a very dense and uniform compound layer with minimal porosity. ■ Performance of low-temperature treatment - Low-temperature nitriding minimizes surface roughness and thermal distortion after nitriding treatment, making it suitable for mass nitriding of precision parts and thin plate products. ■ Control of nitriding layer - Allows control over the thickness of the compound layer without sacrificing the hardened layer. *For more details, please refer to the PDF document or feel free to contact us.

Company：エア・ウォーターNV
Price：Other

Processing Contract

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Japan Parkarizing Co., Ltd. Business Introduction

Creating the world of tomorrow. Leave metal surface treatment and surface modification to us.

Nihon Parkalizing Co., Ltd. has adopted the founder's principle of "valuing limited resources..." as its management philosophy, and has positioned itself as a technology-oriented company. Since its establishment, it has dedicated itself to research and development, making it its business to provide technology that protects metals from corrosion and wear. Now, with the aim of "creating new value" by not only preventing corrosion but also imparting functions to the surfaces of materials, we will continue to develop functions that meet the diverse needs of our customers. 【Business Activities】 ○ Metal heat treatment and surface processing ○ Sales of metal surface treatment agents ○ Outsourcing processing For more details, please contact us or download the catalog.

Company：日本パーカライジング仙台工場
Price：Other

Surface treatment contract service
Processing Contract

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Gas Soft Nitriding Treatment (SN Process)

For improving the wear resistance, fatigue strength, and sliding performance of steel materials, gas soft nitriding treatment is recommended.

This is an introduction to the gas soft nitriding treatment (SN process) conducted by our company. When gas soft nitriding is performed, a compound layer (ε layer) of about 5μm to 20μm is formed on the metal surface. This compound layer consists of a layer made of nitrides and carbides, and the gas soft nitriding treatment is conducted in an atmosphere that contains not only nitrogen atoms but also carbon atoms. Furthermore, inside this compound layer, a layer of nitrides called the diffusion layer is formed, and these compound and diffusion layers enhance the wear resistance, fatigue strength, and sliding performance of steel material components. For this reason, it can be said that this is a widely used surface heat treatment for automotive parts, electronic components, general industrial equipment, molds, and more. 【Features】 ■ Shapes that are unsuitable for salt bath nitriding or plasma nitriding, such as deep holes and slits, can be easily treated. ■ The surface has a clean, milky white finish without the adhesion of impurities or oxide films. ■ Easily applicable from small lots to mass production, for both small and large parts. ■ Improvement of mechanical properties: enhanced wear resistance (effect of high hardness and low friction coefficient of the compound layer). *For more details, please refer to the PDF document or feel free to contact us.

Company：朝日熱処理工業
Price：Other

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Precision low-temperature nitriding treatment (PSN treatment)

Introduction of precision low-temperature nitriding treatment targeting stainless steel precision parts and precision molds developed by our company.

The precision low-temperature nitriding treatment (PSN treatment) is a precision low-temperature nitriding process developed by our company, targeting stainless steel precision parts and precision molds. It is a groundbreaking treatment method that uses specially formulated plastic raw materials as a nitriding source. This method allows for effective utilization of raw materials and has minimal environmental impact. Currently, we are researching and developing a method to harden austenitic stainless steel without compromising its corrosion resistance, which is a global theme. 【Features】 ■ Easy nitriding treatment of stainless steel ■ Low-temperature treatment (400°C to 530°C) minimizes dimensional changes and deformation ■ Composite treatments can be easily performed, allowing for subsequent processes such as shot peening and PVD treatment, enabling improvements through synergistic effects ■ Improvement of mechanical properties - Enhanced wear resistance, fatigue strength, and heat resistance ■ Improved release properties in resin molds *For more details, please refer to the PDF document or feel free to contact us.

Company：朝日熱処理工業
Price：Other

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Precision nitriding treatment (PSN treatment) for small items and thin items such as precision molds.

For small and thin items that do not become brittle, please try Asahi Heat Treatment's precision low-temperature nitriding process (PSN treatment).

Soft nitriding treatment can easily form a nitrided layer of approximately several hundred microns to 1 millimeter, combining the surface compound layer and the internal diffusion layer, within a processing time of a few hours. Therefore, when processing small or thin items of the above sizes, not only the surface but the entire product becomes nitrided, which can lead to brittleness. Our precision low-temperature nitriding treatment (PSN treatment) allows for easy control of nitrogen diffusion by performing the treatment at low temperatures. This enables soft nitriding treatment that retains the toughness of small and thin items. If you wish to achieve soft nitriding while maintaining toughness even for small or thin items, please consider our precision low-temperature nitriding treatment (PSN treatment). 【Other Features】 - Low-temperature treatment (400°C to 530°C) minimizes dimensional changes and deformation. - Subsequent processes such as shot peening and PVD treatment are possible, allowing for synergistic effects through composite treatments. - Improvement of mechanical properties, mainly enhancing wear resistance, fatigue strength, and heat resistance. - Improved release properties in resin molds. *For more details, please refer to the PDF document or feel free to contact us.

Company：朝日熱処理工業
Price：Other

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[Information] Nitride treatment of non-ferrous metal Ta (tantalum)

Introducing the results and discussion of the nitriding treatment of the non-ferrous metal Ta (tantalum), which is difficult to nitridize. Basic knowledge such as the fundamental physical properties and applications of Ta (tantalum) is also included!

Non-ferrous metal Ta (tantalum) is used in electronic devices such as mobile phones, PCs, and DVD players as an electrolytic capacitor, and in the field of microelectronics, tantalum nitride (TaN) is used as a thin film insulator. This document discusses the nitriding treatment of non-ferrous metal Ta (tantalum), which is considered difficult to nitridize, and presents changes in characteristics after nitriding treatment, as well as considerations based on X-ray diffraction results. We invite you to read it. [Contents] ■ Properties of Ta (Tantalum) ■ Characteristics after nitriding treatment of Ta (Tantalum) ■ Examples of X-ray diffraction results for Ta and nitrided Ta ■ Results and discussion *For more details, please refer to the PDF document or feel free to contact us.

Company：朝日熱処理工業
Price：Other

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